poor mesh quality on metal foam

- January 30, 2020 at 7:19 pm
  
  Nikopar10
  Subscriber
  
  Hi, i'm Nicolás. I have tried to simulate a heat sink made with metal foam on fluent. The image is the RVE i will use to simplify the further calculations. ANSYS is able to generate a mesh succesfully, the problem is the quality of it, in consecuence, the further calculations have unsuccesful. The first image shows the foam alone, the other shows the foam and the fluid domain. My question is, is there a way to improve the mesh quality in such a complex geometry? or should i just try to figure it out messing around with the fluent module settings?
  
  Greetings from Chile!
- January 31, 2020 at 3:47 pm
  
  Rob
  Forum Moderator
  
  If you build a model like that most of the fluid will go around the foam. Mesh quality will be a function of cell size and geometry. If you have very sharp angles you may struggle: the wrapper may help.
- January 31, 2020 at 6:57 pm
  
  Nikopar10
  Subscriber
  
  yeah, i know the fluid does not "like" the foam, i have made some simple simulation with only fluid dynamics. This is a kind of introductory study for the next investigations.
  
  Thank for the reply, i will try the wrapper and come back to notify if it helped or not for further discutions.
  
  Greetings!
- February 10, 2020 at 8:06 pm
  
  Nikopar10
  Subscriber
  
  Hi! i have tried to use the "wrapped" on meshing module of workbench but i couldn't find it anywhere. where can i find it ? i'm using a Java script for the geometry, then i create a fluid domain around the scripted body on DesignModeler,then i use the workbench meshing module.
  
  Greetings!
- February 11, 2020 at 11:33 am
  
  Rob
  Forum Moderator
  
  The Wrapper is in Fluent Meshing. Try assembly meshing in Workbench, I'd stick with tets given the shapes. That may solve the geometry problem but you may either need a very fine mesh and/or get skew cells.